May 11, 2026, Shenzhen, China. – With the rapid acceleration of AI clusters, data center switching architectures, and 200G/400G network deployments, demand for higher port density and more flexible network breakout solutions continues to grow. Dual-density SFP56-DD optical modules are becoming an important option for next-generation high-performance switching and interconnect architectures.

GIGALIGHT introduces the dual-density 100G SFP56-DD SR2 optical module based on 2×50G PAM4 modulation technology, delivering double-density capability and outstanding port density to meet the requirements of next-generation high-performance networks. The SFP56-DD (Double Density) form factor maintains the compact size of the traditional SFP+ module (approximately 14 × 56 mm) while enabling 100 Gbps high-speed transmission through two 53.125 Gbps electrical lanes. Compared with QSFP28 (18.35 × 72.4 mm), the SFP56-DD significantly improves PCB space utilization and reduces board space consumption by approximately 35%. This allows more ports to be deployed within the same system footprint, enabling ultra-high-density network deployments and improved system scalability.

100G SFP56-DD SR2 Product Features

• Form factor: SFP56-DD
• Power consumption: <3.5W, typical 3W
• Optical interface: 2×50G PAM4 VCSEL
• Electrical interface: 2×50G PAM4
• Optical connector: MPO-12/UPC
• Transmission distance: 70m on OM3 MMF and 100m on OM4 & OM5 MMF
• DSP inside
• CMIS V4.0 compliant

Flexible 200G Port Breakout Application Scenarios

GIGALIGHT will continue to focus on innovation in high-speed optical interconnect technologies, providing global customers with higher-density, lower-power, and more flexible optical communication solutions, driving the continuous evolution of AI and data center networks.

About GIGALIGHT

As an open optical networking explorer, GIGALIGHT integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company’s product portfolio includes III-V optical modules, silicon photonics modules and silicon-based NPO/CPO engines, liquid-cooled optical modules, passive optical components, Active Optical Cables (AOCs), Direct Attach Cables (DACs), coherent optical communication modules, OPEN DCI BOX subsystems based on coherent and O-band DWDM optical modules, and UHD SDI video optical transceivers. GIGALIGHT focuses on applications including AI data centers, 5G transport networks, metropolitan WDM transmission, and ultra-HD broadcast and video, positioning itself as an innovative designer of high-speed optical interconnect hardware solutions.